Wrench.



A. SCHUBERT.

WRENCH.

APPLICATION FILED APR.. 21. 190B.

903,894.. Patented Nv. 17, 190s.

1915 l?? ,ya j

/lllllflf//l//l/Q AUGUST SCHUBERT, OF CHICAGO, ILLINOIS.

WRENCH.

Specificationxof Letters Patent.

Patented Nov. 17', 1908.

Application led April 21, 1908. Serial No. 428,432.

To all whom 'it may concern:

Be it known thatV I, AUGUST SCHUBERT, a subject of the Czar of Russia,residing at Chicago, county of Cook, and State of Illinois, haveinvented certain new anduseful Improvements in Wrenches, of which thefollowing is a specification.

My invention relates to wrenches and the object of my invention, is toprovide a wrench the jaws of which, may be readily opened and which willclose themselves about the part to be engaged thereby.

A further object of my invention is to provide a wrench as mentioned,which shall be of simple construction, of low cost to manufacture andeasy to operate.

Other objects will appear hereinafter.

With these objects in view, my invention consists generally in a wrenchcomprising a stationary jaw having a shank forming a handle, and amovable jaw having a shank sleeved longitudinally through saidstationary jaw and handle, a ratchet edge on the shank of said movablejaw, and a spring pressed latch on said handle having a serrated end toengage said ratchet edge to prevent outward movement of the movable jawwhen the wrench is in service.

My invention further consists in a wrench comprising a stationary jawhaving a handle formed thereon and a movable jaw having a shank sleevedlongitudinally through said stationary jaw and handle, a serrated edgeon the shank of the movable jaw and a latch on said handle having aserrated end to engage said ratchet, said latch having a thumb piecewhereby it may be retracted from engagement with said edge and a springadapted to close said jaws when the latch is retracted.

My invention further consists in various details of construction andarrangements of parts all as will be described more fully hereinafter,and particularly pointed out in the claim.

My invention will be more readily understood by reference to theaccompanying drawings forming a part of this specification, and inwhich,

Figure 1 is a longitudinal section of a wrench embodying my invention inits preferred form, the movable jaw and its shank being shown inelevation and the jaws being partially opened, Fig. 2 is a similar viewillustrating the latch retracted, and the aws closed, and Fig. 3 is anedge view of the wrench, the jaws being closed. j

Referring now to the drawings, 1 and 2 in dicate the stationary andmovable aws of the wrench which are of the usual form. Formed integrallywith the jaw 1 is the handle 3 which comprises a'straight shank portionl and a grip 5. The movable jaw 2 is provided with an integral shank 6,preferably rectangular in cross section and of a length substantiallyequal to that of the aw 1 and the handle 3. The shank 6 is insertedlongitudinally through the jaw 1 and the handle, the same being providedwith a longitudinal recess or passageway 7 to receive the shank. Theshank 6 is cut away throughout a portion of its length and upon one edgeas at 8 forming a recess having the shoulders or ends 9 and 10. A spring11 is arranged within the recess 8 and a pin 12 extends through theadjacent wall of the handle into said recess, the spring beinginterposed between said pin and the end wall 9. It is obvious that thespring at all times tends to close the jaws.

The opposite edge of the shank 6 is serrated forming a ratchet edge 13which is engaged by a spring pressed latch 14 pivotally mounted in thehandle. The latch is arranged in a transverse recess 15 formed in thehandle between the ears 16 and is pivotally mounted upon a pin 17extending through said ears and said latch. The end of the latch isserrated as at 18 to engage the edge 13 of the shank 6, and the pin 17is arranged forwardly of the serrated portion so that the latter may bereadily withdrawn or retracted from said edge.

19 indicates a thumb piece or lever portion formed on the latch by meansof which the end 18 is retracted. Interposed between the rear face ofthe latch 14 and the adjacent wall 20 of the handle is a spring 21 whichnormally holds the latch in engagement with the serrated edge. The upperrear end of thc latch is provided with a lug 22 which rests in a notchor socket 23 formed in the face of the handle when the wrench is inoperation, and which prevents the latch from moving too far forwardunder the strain incident to using the wrench. If greater strength isrequired the front wall 24 of the recess 15 may be arranged to impingeagainst the front beveled or angular-ly disposed face 25 of thc latch asshown in Fig. l, in which case the lug 22 may be dispensed with or notas desired.

In using the Wrench, the latch is retracted and the jaw 2 opened againstthe tension of the spring 1l. The latchis then released and the Wrenchplaced in position about the parts to be engaged thereby. The thumbpiece 19 is again depressed, retracting the latch and the springimmediately closes the jaws upon the Work. lVhen the latch is released,the jaws are firmly locked.

Having described my invention what I claim as new and desire to secureby Letters Patent, is:

A Wrench comprising a stationary jaW having a shank forming a handle, incombination With a movable jaw having a shank inserted longitudinallythrough said stationary jaw and handle, the shank of the movable jawhaving a ratchet formed on one edge and a longitudinal recess formed inthe other pin and the Wall` forming the end of said recess,substantially as described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

AUGUST SCHUBERT.

Witnesses y HOWARD S. AUSTIN, ANNA L. EKVALL.

